Attached is a screenshot of today's battery usage. Today was moderate on the heavy side and the battery has lasted 14 hours with 25% left.
So far, I am very impressed with this device and it is a definite improvement over the Xperia Z1 which I was really frustrated with -
see my review (some of you XDA members / Z1 Zealots disagreed with my review lol).
Sony's Z-series phone is one of, if not THE best looking phones out there and even though the Z2 is bigger than the Nexus 5, Z1, Galaxy S5, etc.. it is still very comfortable to hold. I was playing with the HTC One M8 today at Best Buy today and I really like how comfortable it is to hold. However, the button placement of the M8 was awkward and my fingers often got in the way of the camera lens. Photo quality also suffered because of the low 4MP camera.
There is no lag on this phone at all and applications load and run quickly because it is running the top of the line Android hardware with the latest operating system so there are no worries there. The only thing that I wished the Z2 had was 32GB internal storage or at least an option to run applications off the SD card like how Samsung does it.
Most importantly, the camera has improved over the Z1 (thankfully) but it's still not at the level of the iPhone 5s in auto mode. Most phone camera photographers just want something that can take great pictures without too much thought and the iPhone still wins in that category. However, the Xperia Z2 is not too far behind and I am hopeful that upcoming firmware updates improve the camera and fix some annoying bugs.
I'm not sure how the Galaxy S5 will be but so far the Z2 is the best android phone right now in terms of design, performance, battery life, and camera. I'll have a more complete review sometime next week as I need to further test the device and play with more of it's features :victory: